1143231243 has 64 divisors (see below), whose sum is σ = 2008350720. Its totient is φ = 561052800.

The previous prime is 1143231227. The next prime is 1143231269. The reversal of 1143231243 is 3421323411.

It is a happy number.

It is not a de Polignac number, because 1143231243 - 2⁴ = 1143231227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1143231203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 313038 + ... + 316668.

It is an arithmetic number, because the mean of its divisors is an integer number (31380480).

Almost surely, 2^1143231243 is an apocalyptic number.

1143231243 is a deficient number, since it is larger than the sum of its proper divisors (865119477).

1143231243 is a wasteful number, since it uses less digits than its factorization.

1143231243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3728.

The product of its digits is 1728, while the sum is 24.

The square root of 1143231243 is about 33811.7027521537. The cubic root of 1143231243 is about 1045.6299836033.

Adding to 1143231243 its reverse (3421323411), we get a palindrome (4564554654).

The spelling of 1143231243 in words is "one billion, one hundred forty-three million, two hundred thirty-one thousand, two hundred forty-three".